S7008 CE/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7008 CE/P4ADGA
Basic Information
System of measurement
Metric
Weight
0.38 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
68 mm
Outside diameter tolerance
-0.004mm to 0
Width
30 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4478 lbf
Radial static load rating
3442 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 137.46
/ each
In Stock
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S7008 CE/P4ADGA Bearing Product Overview & Core Advantages
The S7008 CE/P4ADGA is a super-precision double row angular contact ball bearing engineered for applications demanding exceptional accuracy and rigidity. Positioned in the P4A tolerance class, it delivers ultra-precise rotational performance. Its double row design enables it to support substantial combined loads—simultaneously handling radial loads and bidirectional axial loads—making it an ideal, compact solution for high-speed, high-reliability machinery where space is at a premium.
S7008 CE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance & Benefit |
|---|---|---|
| S7008 | Basic bearing series and size designation (40mm bore, 68mm OD). | Defines the core bearing dimensions and geometry. |
| CE | Contact angle of 15° and universal matching designation. | Optimized for high-speed operation and allows for flexible bearing arrangement in sets. |
| P4A | Tolerance class equivalent to ABEC 7 (P4), with enhanced running accuracy. | Guarantees superior dimensional and running precision for smooth, vibration-free operation. |
| DGA | Sealed on both sides and pre-lubricated with grease. | Provides effective contamination protection and is lubricated for life, reducing maintenance needs. |
S7008 CE/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact structure provides a rigid support system, significantly increasing the bearing's ability to withstand combined loads and moment loads compared to single row designs.
- Super-Precision Performance: Manufactured to P4A tolerance class with a 15° contact angle, this bearing ensures minimal runout and exceptional rotational accuracy, which is critical for precision applications.
- Optimized High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces, while the optimized internal geometry and grease lubrication contribute to a high limiting speed of 41,000 rpm.
- Maintenance-Free Operation: The integral seals (DGA) effectively retain lubricant and exclude contaminants, making the bearing pre-lubricated for life under normal operating conditions within its specified temperature range of -30°C to 110°C.
S7008 CE/P4ADGA Bearing Typical Application Areas
The S7008 CE/P4ADGA is ideally suited for high-performance machinery requiring superior precision and speed, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Spindles: In PCB drilling, semiconductor manufacturing, and other precision machining equipment.
- High-Frequency Motors: Where low vibration and high rotational accuracy are paramount.
- Medical Equipment: Such as high-speed dental handpieces and laboratory centrifuges.
